Vintage Floral Art Deco Diamond Engagement Ring in Platinum.  This Art Deco engagement ring features a 1.12 carat Old European cut diamond with .48 carats of diamond accents and is set in platinum. The center stone is bead set inside a square with open sides, and atop lovely shoulders which are complete with bezel set marquise diamonds adorned with milgrain detail. The band has a knife edge which runs directly from the points of the lowest set marquise diamonds.